In the news, Dr. Michael d. Lyman, professor of criminal justice at Columbia College, testified this week in the trial of William Porter, one of six Baltimore officers charged in the death of Freddie Gray. Gray’s neck was broken while being transported in shackles in a Baltimore police van. He died a week later.

Forensic pathology expert Dr. Daniel Davis, medical examiner in Lane County, OR, testified in the Yakima, WA, case against Officer Karl Thompson. Thompson is accused of using excessive force with a baton in the 2006 death of Otto Zehm and later lying to investigators.